2N5303 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 80 V
• Collector-Base Voltage, max: 80 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 20 A
• Collector Dissipation: 200 W
• DC Current Gain (h_fe): 15 to 60
• Transition Frequency, min: 2 MHz
• Operating and Storage Junction Temperature Range: -65 to +200 °C
• Package: TO-3

Here is an image showing the pin diagram of this transistor.The complementary PNP transistor to the 2N5303 is the 2N5745.You can replace the 2N5303 with the 2N5686, 2N5686G, KD503, MJ14002 or MJ14002G.